METHOD FOR PREPARING FATTY ACID ALKYL ESTERS

摘要

The present invention relates to a method for preparing fatty acid alkyl esters, comprising a step of esterifying and transesterifying oil, fat, or a mixture thereof, wherein the oil, fat, or the mixture thereof contains free fatty acids and has an acid value of 2 to 200, in the presence of one or more catalysts selected from a low-carbon, i.e. C1 to C5, alcohol, MgO and Mg(OH)2, under the conditions of 150 to 250°C and 5 to 100 atmospheric pressures.